<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <meta http-equiv="X-UA-Compatible" content="IE=edge">
  <meta name="viewport" content="width=device-width,initial-scale=1,minimum-scale=1,maximum-scale=1,user-scalable=no,viewport-fit=cover">
  <title>WL的简历</title>
</head>
<body>

  <style id="style"></style>
  <div id="html"></div>
  <div id="div1Wrapper">
    <div id="div1"></div>
  </div>
  
  <style>
    *{margin:0; padding: 0;box-sizing: border-box;}
    *::after{
      box-sizing: border-box;
    }
    *::before {
      box-sizing: border-box;
    }
    #html{
      word-break:break-all;
    }
    #div1{
      position:fixed;
      left: 50%;
      transform: translateX(-50%);
      top:20px;
    }
    #div1::before{
      content:''; 
      display:block;
      position: absolute;
    }
    #div1::after{
      content:'';
      display:block;
      position: absolute;
    }
    @media (max-width:500px){
      #html{
        height: 50vh;
        overflow: auto;
      }
      #div1Wrapper{
        height: 50vh;
      }
      #div1{
        position: relative;
        top:50px;
        transform: translateY(-50%);
        transform: translateX(-50%);
      }

    }
  </style>
  <script src="main.js"></script>
</body>
</html>